benzyl (2R,2'S,4R,9a'S)-4-(2-((R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(phenylselanyl)propanamido)benzamido)-2'-methyl-3',5-dioxo-2',3',4,5-tetrahydro-3H-spiro[furan-2,9'-imidazo[1,2-a]indole]-1'(9a'H)-carboxylate

phenylselenocysteinylglycine-N-methyl amide

phenylselenocysteinylalanine-N-methyl amide

acetylseryl-(O-tert-butyl)-phenylselenocysteinylalanine-N-methyl amide

benzyl (2R,2'S,4R,9a'S)-4-(((Z)-2-((R)-1-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(phenylselanyl)ethyl)-4H-benzo[d][1,3]oxazin-4-ylidene)amino)-2'-methyl-3',5-dioxo-2',3',4,5-tetrahydro-3H-spiro[furan-2,9'-imidazo[1,2-a]indole]-1'(9a'H)-carboxylate